WO2008137013A1 - Method of making compressible elastomeric spring - Google Patents
Method of making compressible elastomeric spring Download PDFInfo
- Publication number
- WO2008137013A1 WO2008137013A1 PCT/US2008/005584 US2008005584W WO2008137013A1 WO 2008137013 A1 WO2008137013 A1 WO 2008137013A1 US 2008005584 W US2008005584 W US 2008005584W WO 2008137013 A1 WO2008137013 A1 WO 2008137013A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- compressible elastomeric
- axial
- predetermined plurality
- prongs
- predetermined
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F35/00—Making springs from wire
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
- B61G9/00—Draw-gear
- B61G9/04—Draw-gear combined with buffing appliances
- B61G9/06—Draw-gear combined with buffing appliances with rubber springs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
- B61G9/00—Draw-gear
- B61G9/04—Draw-gear combined with buffing appliances
- B61G9/10—Draw-gear combined with buffing appliances with separate mechanical friction shock-absorbers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
- B61G9/00—Draw-gear
- B61G9/20—Details; Accessories
- B61G9/22—Supporting framework, e.g. cradles; Spring housings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
- B29C43/361—Moulds for making articles of definite length, i.e. discrete articles with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons
- B29C2043/3613—Moulds for making articles of definite length, i.e. discrete articles with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons applying pressure locally
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
- B29C2043/3665—Moulds for making articles of definite length, i.e. discrete articles cores or inserts, e.g. pins, mandrels, sliders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/721—Vibration dampening equipment, e.g. shock absorbers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49609—Spring making
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49609—Spring making
- Y10T29/49611—Spring making for vehicle or clutch
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49609—Spring making
- Y10T29/49615—Resilient shock or vibration absorber utility
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49833—Punching, piercing or reaming part by surface of second part
- Y10T29/49835—Punching, piercing or reaming part by surface of second part with shaping
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49833—Punching, piercing or reaming part by surface of second part
- Y10T29/49835—Punching, piercing or reaming part by surface of second part with shaping
- Y10T29/49837—Punching, piercing or reaming part by surface of second part with shaping of first part
Definitions
- the present invention relates, in general, to compressible elastomeric springs capable of absorbing energy and, more
- this invention relates to a method for making elastomeric compressible spring.
- Compressible elastomeric springs including a multi-tiered stack of elastomeric pads separated by plates, have been extensively employed for absorbing energy and have gained wide acceptance for absorbing and cushioning buff and draft dynamic impact forces encountered during make-up and operation of a railway vehicle.
- U.S. Pat. No. 4,198,037 to Anderson and U.S. Pat. No. 5,351,844 to Carlstedt disclose related prior art methods of making compressible elastomeric springs.
- Carlstedt is particularly concerned with a method of improving center-grip metal plate and its mechanical interlocking to an elastomeric pad in order to improve lateral stability of the compressible elastomeric spring.
- the present invention provides a method of making a compressible elastomeric spring.
- the method includes the step of providing at least one compressible elastomeric pad defining a central axis and having a pair of axial ends. Each of the pair of axial ends has each of a substantially flat surface disposed normal to the central axis and a central raised projection formed thereon.
- providing a pair of plate like members Each of the pair of plate like members has at least one substantially flat surface, one of an aperture and a cavity provided in at least one substantially flat surface thereof and a predetermined plurality of prongs positioned about a peripheral edge of such one of the aperture and cavity and extending at a predetermined angle relative to at least one substantially flat surface of each plate like member.
- the present invention provides a method of making a multi-tiered compression spring assembly including a predetermined plurality of axially disposed compressible elastomeric pads, a first end plate on one end of the assembly, a second end plate on an opposed end of the assembly and a separator plate between each pair of adjacent compressible elastomeric pads.
- the method includes the step of forming each plate with an axial aperture. Next, forming a predetermined plurality of prongs about a peripheral edge of the axial aperture. Then, extending the predetermined plurality of prongs at a predetermined angle relative to a surface of the plates which is in juxtaposition to one of the predetermined plurality of compressible elastomeric pads.
- the present invention discloses a method of providing at least one of axial straightness and lateral stability in a multi-tiered compression spring assembly during repetitive cushioning of axial dynamic impact loads in excess of 7,500 pounds per square inch (PSI) and in absence of a center rod or peripheral guidance.
- the spring assembly includes a predetermined plurality of axially disposed compressible elastomeric pads formed from a preselected copolyester polymer having a modified molecular structure and having a predetermined shape factor and a separator plate between each pair of adjacent compressible elastomeric pads.
- the method includes the step of forming each axial end of each of the predetermined plurality of pads with an axial projection.
- each separator plate with an axial aperture and with a predetermined plurality of prongs positioned about a peripheral edge of the axial aperture and extending at a predetermined angle relative to a surface of each separator plate which is in juxtaposition to one of the compressible elastomeric pads.
- positioning the separator plates and the predetermined plurality of compressible elastomeric pads to form the multi-tiered compression spring assembly.
- aligning the predetermined plurality of prongs with each of a respective axial projection and groove Applying a predetermined axial force to one end of the multi-tiered compression spring assembly.
- Another object of the present invention is to provide a method of making a compressible elastomeric spring stack of elastomeric pads separated by plates that improves mechanical interlocking of the metal plates to the compressible elastomeric pad .
- Yet another object of the present invention is to provide a method of making a compressible elastomeric spring stack of elastomeric pads separated by plates that improves axial straightness of the stack during use.
- a further object of the present invention is to provide a method of making a compressible elastomeric spring stack of elastomeric pads separated by plates that improves lateral stability of the stack during use.
- Yet a further object of the present invention is to provide a method of making a compressible elastomeric spring stack of elastomeric pads separated by plates that does not require use of center rod or axial guiding during use.
- An additional object of the present invention is to provide a method of making a compressible elastomeric spring stack of elastomeric pads separated by plates that enables the spring to absorb and cushion higher dynamic impact forces during make-up and operation of a railway vehicle.
- Another object of the present invention is to provide a method of pre-shortening a compressible elastomeric spring stack of elastomeric pads separated by plates prior to installation of the spring into a conventional yoke of a railway vehicle.
- FIG. 1 is an isometric view of a compressible elastomeric spring of the present invention, particularly illustrating the method of pre-shortenmg the spring prior to its installation into a yoke of the railway vehicle;
- FIG. 2 is an isometric view of a compressible elastomeric spring of FIG. 1, particularly illustrating the spring installed into the yoke in a pre-shortened condition.
- the present invention provides several methods of making a compressible elastomeric spring.
- the various structures of the related springs produced by the methods of the present invention are disclosed in the co-pending U.S. Serial Number entitled "Compressible Elastomeric Spring”.
- the general methods of forming compressible elastomeric spring are disclosed in U.S. Pat. Nos . 4,198,037 and 5,351,844, whose teachings are incorporated into this document by reference thereto.
- the method includes the step of providing at least one compressible elastomeric pad, generally designated as 110, defining a central axis and having a pair of axial ends. Each of the pair of axial ends has each of a substantially flat surface disposed normal to the central axis and a central raised projection formed thereon.
- the structure of such compressible elastomeric pad 110 is best disclosed in the co-pending U.S.
- each of the pair of members is a plate like member, generally designated as 150, having at least one substantially flat surface, an aperture 180 provided in at least one substantially flat surface thereof and a predetermined plurality of prongs 170 positioned about a peripheral edge 182 of the aperture 180 and extending at a predetermined angle relative to at least one substantially flat surface of each plate like member 150.
- plate like member 150 is best shown and described in the co-pending U.S. Serial Number entitled "Plate For A Compressible
- the compressible elastomeric pad 110 is positioned between the pair of plate like members 150 followed by alignment of the predetermined plurality of the prongs 170 of each plate like member 150 with a respective central projection 130 of the compressible elastomeric pad 110.
- the compressible elastomeric spring 100 can be formed.
- a predetermined force is applied axially to an exposed surface of one of the pair of plate like members 150.
- each of the predetermined plurality of prongs 170 pierces an exterior surface of the central projection 130 and penetrates a predetermined distance at least into the central projection 130 providing for frictional engagement between the prongs 170 and the central projection 130 and establishing a mechanical interlock between the compressible elastomeric pad 110 and the abutting plate like member 150.
- the applied axial force is removed when such interlock is achieved.
- the compressible elastomeric pad 110 must be precompressed again, to a height which is generally identical to the solid height of such compressible elastomeric pad 110. It has been also found that the axial force required to precompress the compressible elastomeric pad 110 and achieve the mechanical interlock with abutting plate like members 150 is between about 700,000 pounds and about 800,000 pounds.
- the applied axial force and the construction of the prongs 170 enables each central projection 130 to axially extend into the aperture 180 provided in a respective plate like member 150.
- the method also includes the steps of forming a groove 140 in each substantially flat surface of the compressible elastomeric pad 110 in abutting engagement with a peripheral side surface of the central projection 130, aligning the prongs 170 with the groove 140, piercing the surface of the groove 140 and penetrating into the compressible elastomeric pad 110.
- the diameter of the central projection 130 is sized based on the thickness of the prongs 170 so that when each prong 170 pierces the exterior surface of the central projection 130, a portion of the prong 170 is exposed for piercing the surface of the groove 140.
- the method additionally includes the step of sizing the width of the groove 140 in a manner to align an exterior peripheral edge of the groove 140 with an exterior surface of the prongs 170.
- the method also includes alternative steps of forming a plurality of apertures 148 in abutting engagement with the peripheral side surface of the central projection 130, aligning the prongs 170 with the apertures 148 and positioning each prong 170 within a respective aperture 148 during application of the axial forming force.
- the method includes the additional steps of positioning a predetermined plurality of projections 160 on the substantially flat surface of each of the pair of plate like members 150, forming an aperture 164 through each of the predetermined plurality of projections 160 and each plate like member 150 and enabling the material of the compressible elastomeric pad 110 to flow into each aperture 164 during cold forming process of the compressible elastomeric spring 100.
- the above method has been described as caging the compressible elastomeric pad 110 between the pair of plate like members 150, the present invention contemplates that at least one of such plate like members 150 may be replaced with a follower block 50, 60 or the center plate 200, best shown and described in the co-pending U.S. Serial Number entitled "Combination Yoke and Elastomeric Draft Gear".
- the invention provides a method of making a multi-tiered compression spring assembly, generally designated as 102.
- Such multi-tiered compression spring assembly 102 includes a predetermined plurality of axially disposed compressible elastomeric pads 110, a first end plate 150 on one end of the assembly, a second end plate 150 on an opposed end of the assembly and a separator plate 190 between each pair of adjacent compressible elastomeric pads 110.
- the notable distinction in forming the multi-tiered compression spring assembly 102 as compared to forming the compressible elastomeric spring 100 is that the plurality of prongs 170a, 170b are formed on every surface of the plates 190 which is in juxtaposition to one of the compressible elastomeric pads 110.
- making the multi-tiered compression spring assembly 102 in accordance with the above described method including the steps of providing prongs 170, 170a, 170b formed on the plates 150, 190 respectively, providing projection 130 and groove 140 formed on the compressible elastomeric pad 110, as well as making the compressible elastomeric pad 110 from a preselected copolyester polymer having a modified molecular structure and providing the compressible elastomeric pad 110 with a predetermined shape factor provides for at least one of axial straightness and lateral stability enabling such multi-tiered compression spring assembly 102 to repetitively cushion and absorb axial dynamic impact loads in excess of 7,500 pounds per square inch (PSI) and further within the range of between about 9, 500 PSI and about 11,000 PSI in absence of a center rod or peripheral guidance .
- PSI pounds per square inch
- the present invention further provides for a method of pre- shortening the multi-tiered compression spring assembly prior to its installation into a conventional yoke, generally designated as 20.
- a multi-tiered compression spring assembly generally designated as 104, which includes a predetermined plurality of compressible elastomeric pads 110 and plates 150, 190 interlocked therebetween in accordance with the above described embodiments.
- the method of pre-shortening the multi-tiered compression spring assembly 104 also includes the step of adapting each of the rear follower block 50 and the front coupler follower block 60 with means, generally designated as 450, for fixing the assembled multi-tiered compression spring 104 at a predetermined pre- shortened height.
- such means 450 includes a flange 452 rigidly secured to or integrally formed with each side edge of each follower block 50, 60 and having an aperture 454 formed therethrough.
- the flanges 452 are positioned on a respective follower block 50, 60 in a manner aligning the opposed apertures 454 in the same plane, which is shown as a vertical plane in FIGS. 1-2, when the multi-tiered compression spring assembly 104 is installed into the yoke 20.
- Each follower block 50, 60 is operatively positioned at a respective end of the multi-tiered compression spring assembly 104 prior to application of the axial forming force.
- the compressible elastomeric pads 110, plates 150, 190 and follower blocks 50 and 60 are precompressed together. Then, the applied axial force is partially removed enabling the multi-tiered compression spring assembly 104 to return to a pre-shortened height which is smaller than the normal extended height of the multi-tiered compression spring assembly 104 and which enables installation of the multi-tiered compression spring assembly 104 with the follower blocks 50, 60 into the yoke 20 in a conventional manner. Next, a pair of rods 456 having threaded ends 458 are inserted through the aligned apertures 454.
- Fasteners such as conventional threaded nuts 460 are operatively engaged at each threaded end 458 thus fixing the multi-tiered compression spring assembly 104 at the predetermined pre-shortened height.
- the predetermined pre-shortened height of the multi-tiered compression spring 104 is fixed, the applied axial forming force is removed completely.
- the nuts 460 are disengaged, preferably gradually and equally at each side of the multi-tiered compression spring assembly 104, from each threaded end 458, the rods 456 are removed and the multi-tiered compression spring assembly 104 is allowed to extend to its normal operating height and being maintained in a conventional preload condition, generally being defined by a preload force of between about 20, 000 pounds and about 50,000 pounds. It would be appreciated that the preload condition will apply to various embodiments of the compressible elastomeric springs 100, 102 described in the co-pending applications .
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Springs (AREA)
- Vibration Dampers (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Gears, Cams (AREA)
- Gasket Seals (AREA)
- Vibration Prevention Devices (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2684343A CA2684343C (en) | 2007-05-01 | 2008-05-01 | Method of making compressible elastomeric spring |
MX2009011718A MX2009011718A (en) | 2007-05-01 | 2008-05-01 | Method of making compressible elastomeric spring. |
AU2008248276A AU2008248276B2 (en) | 2007-05-01 | 2008-05-01 | Method of making compressible elastomeric spring |
KR1020097025123A KR101495521B1 (en) | 2007-05-01 | 2008-05-01 | Method of making compressible elastomeric spring |
CN2008800143008A CN101678845B (en) | 2007-05-01 | 2008-05-01 | Method of making compressible elastomeric spring |
EP08767467A EP2150448A1 (en) | 2007-05-01 | 2008-05-01 | Method of making compressible elastomeric spring |
UAA200912396A UA97519C2 (en) | 2007-05-01 | 2008-05-01 | Method for making compressible elastomeric spring |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US92698707P | 2007-05-01 | 2007-05-01 | |
US60/926,987 | 2007-05-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008137013A1 true WO2008137013A1 (en) | 2008-11-13 |
Family
ID=39596447
Family Applications (8)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2008/005652 WO2008137052A1 (en) | 2007-05-01 | 2008-05-01 | Draft gear assembly, comprising a housing, a compressible elastomeric spring element and a friction cushioning mechanism |
PCT/US2008/005599 WO2008134080A1 (en) | 2007-05-01 | 2008-05-01 | Combination of a yoke and an elastomeric draft gear |
PCT/US2008/005598 WO2008134079A1 (en) | 2007-05-01 | 2008-05-01 | Draft gear assembly comprising a yoke, an elastomeric spring and a friction mechanism |
PCT/US2008/005584 WO2008137013A1 (en) | 2007-05-01 | 2008-05-01 | Method of making compressible elastomeric spring |
PCT/US2008/005604 WO2008134083A1 (en) | 2007-05-01 | 2008-05-01 | Plate for a compressible elastomeric spring |
PCT/US2008/005601 WO2008134081A1 (en) | 2007-05-01 | 2008-05-01 | Elastomeric pad for a compressible elastomeric spring |
PCT/US2008/005607 WO2008134084A1 (en) | 2007-05-01 | 2008-05-01 | Compressible elastomeric spring |
PCT/US2008/005606 WO2008137024A1 (en) | 2007-05-01 | 2008-05-01 | Method of making elastomeric pad for a compressible elastomeric spring |
Family Applications Before (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2008/005652 WO2008137052A1 (en) | 2007-05-01 | 2008-05-01 | Draft gear assembly, comprising a housing, a compressible elastomeric spring element and a friction cushioning mechanism |
PCT/US2008/005599 WO2008134080A1 (en) | 2007-05-01 | 2008-05-01 | Combination of a yoke and an elastomeric draft gear |
PCT/US2008/005598 WO2008134079A1 (en) | 2007-05-01 | 2008-05-01 | Draft gear assembly comprising a yoke, an elastomeric spring and a friction mechanism |
Family Applications After (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2008/005604 WO2008134083A1 (en) | 2007-05-01 | 2008-05-01 | Plate for a compressible elastomeric spring |
PCT/US2008/005601 WO2008134081A1 (en) | 2007-05-01 | 2008-05-01 | Elastomeric pad for a compressible elastomeric spring |
PCT/US2008/005607 WO2008134084A1 (en) | 2007-05-01 | 2008-05-01 | Compressible elastomeric spring |
PCT/US2008/005606 WO2008137024A1 (en) | 2007-05-01 | 2008-05-01 | Method of making elastomeric pad for a compressible elastomeric spring |
Country Status (11)
Country | Link |
---|---|
US (9) | US8096432B2 (en) |
EP (8) | EP2150449A1 (en) |
KR (8) | KR101511985B1 (en) |
CN (8) | CN101678845B (en) |
AU (7) | AU2008246063B2 (en) |
CA (8) | CA2682476C (en) |
MX (8) | MX2009011721A (en) |
RU (8) | RU2467222C2 (en) |
UA (8) | UA101615C2 (en) |
WO (8) | WO2008137052A1 (en) |
ZA (1) | ZA200906746B (en) |
Families Citing this family (47)
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WO2008137052A1 (en) * | 2007-05-01 | 2008-11-13 | Wabtec Holding Corp. | Draft gear assembly, comprising a housing, a compressible elastomeric spring element and a friction cushioning mechanism |
CN102083669B (en) * | 2008-05-22 | 2015-11-25 | 贝德洛工业公司 | Center reference feature on railway coupler body and corresponding gauge |
US8544662B2 (en) * | 2008-05-22 | 2013-10-01 | Bedloe Industries Llc | Central datum feature on railroad coupler body and corresponding gauges |
US8196912B2 (en) * | 2008-09-10 | 2012-06-12 | Miner Enterprises, Inc. | Railcar elastomeric spring |
RU2446068C2 (en) * | 2010-06-18 | 2012-03-27 | Открытое акционерное общество "Авиаагрегат" | Absorbing apparatus |
US8967337B2 (en) * | 2010-07-14 | 2015-03-03 | Kimpex Inc. | Device for preventing overdrawing of winch hook |
US8714377B2 (en) * | 2011-02-04 | 2014-05-06 | Wabtec Holding Corp. | Energy absorbing coupler |
CN103492253B (en) * | 2011-03-31 | 2016-11-16 | 麦科恩威特尔莱伊公司 | Railway car yoke |
US8607998B2 (en) | 2011-03-31 | 2013-12-17 | Mcconway & Torley Llc | Railway car yoke |
US8672151B2 (en) * | 2011-09-15 | 2014-03-18 | Wabtec Corp | Elastomeric draft gear for a railcar |
US9562582B2 (en) * | 2011-09-15 | 2017-02-07 | Wabtec Holding Corp. | Compressible elastomeric spring |
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US9701323B2 (en) | 2015-04-06 | 2017-07-11 | Bedloe Industries Llc | Railcar coupler |
USD781179S1 (en) | 2015-04-28 | 2017-03-14 | Miner Enterprises, Inc. | Railcar cushioning assembly follower |
CN105270434B (en) * | 2015-11-03 | 2017-11-03 | 大连交通大学 | Polygon housing high polymer elastic element and metal friction element combined buffers |
EA033029B1 (en) * | 2015-12-21 | 2019-08-30 | Олег Николаевич ГОЛОВАЧ | Friction shock absorber |
RU2646764C2 (en) * | 2016-01-11 | 2018-03-07 | Олег Николаевич ГОЛОВАЧ | Friction shock absorber |
US9868453B2 (en) | 2016-05-20 | 2018-01-16 | O-Ring Sales & Service, Inc. | Railcar end unit |
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Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4198037A (en) | 1976-12-28 | 1980-04-15 | Miner Enterprises, Inc. | Method of making polyester elastomer compression spring and resulting product |
US5351844A (en) | 1993-06-01 | 1994-10-04 | Miner Enterprises, Inc. | Elastomeric spring unit |
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